Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Long-term Loans (Schedule of Movement in Liabilities Deriving from Financing Activities) (Details)

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Long-term Loans (Schedule of Movement in Liabilities Deriving from Financing Activities) (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
[1]
Disclosure of detailed information about borrowings [line items]      
Balance as at January 1, 2017 € 55,865    
Changes from financing cash flows      
Loan from business combination 21,370    
Proceeds from issue of convertible debentures 31,175 [1]
Payment of Debentures (4,842) (4,954) [1] € (4,717)
Receipt of loans 7,443    
Repayment of loans (1,892)    
Accrued interest 161    
Payment of finance lease liability (332)    
Transaction costs related to borrowings 499    
Total net financing cash flows 109,447    
Effect of changes in foreign exchange rates (2,932)    
Balance as at December 31, 2017 106,515 55,865  
Loans and borrowings [Member]      
Disclosure of detailed information about borrowings [line items]      
Balance as at January 1, 2017 17,737    
Changes from financing cash flows      
Loan from business combination 21,370    
Proceeds from issue of convertible debentures    
Payment of Debentures    
Receipt of loans 7,443    
Repayment of loans (1,892)    
Accrued interest 161    
Payment of finance lease liability    
Transaction costs related to borrowings 165    
Total net financing cash flows 44,984    
Effect of changes in foreign exchange rates (120)    
Balance as at December 31, 2017 44,864 17,737  
Convertible debentures [Member]      
Disclosure of detailed information about borrowings [line items]      
Balance as at January 1, 2017 33,790    
Changes from financing cash flows      
Loan from business combination    
Proceeds from issue of convertible debentures 31,175    
Payment of Debentures (4,842)    
Receipt of loans    
Repayment of loans    
Accrued interest    
Payment of finance lease liability    
Transaction costs related to borrowings 320    
Total net financing cash flows 60,443    
Effect of changes in foreign exchange rates (2,812)    
Balance as at December 31, 2017 57,631 33,790  
Finance lease liability [Member]      
Disclosure of detailed information about borrowings [line items]      
Balance as at January 1, 2017 4,338    
Changes from financing cash flows      
Loan from business combination    
Proceeds from issue of convertible debentures    
Payment of Debentures    
Receipt of loans    
Repayment of loans    
Accrued interest    
Payment of finance lease liability (332)    
Transaction costs related to borrowings 14    
Total net financing cash flows 4,020    
Effect of changes in foreign exchange rates    
Balance as at December 31, 2017 € 4,020 € 4,338  
[1] Please refer to note 2C for functional and presentation currency.